Lieberman, who caucuses with Democrats and is positioning himself as a fiscal hawk on the issue, said he opposes any health care bill that includes a government-run insurance program — even if it includes a provision allowing states to opt out of the program, as Reid has said the Senate bill will.

Asked about Lieberman’s threat to filibuster a final vote on the Reid plan, White House press secretary Robert Gibbs said: "I haven't seen the report from Sen. Lieberman or why he's saying what he's saying. I think Democrats and Republicans alike will be held accountable by their constituents who want to see health care reform enacted this year.”

Lieberman said that he’d vote against a public option plan “even with an opt-out because it still creates a whole new government entitlement program for which taxpayers will be on the line."

His comments confirmed that Reid is short of the 60 votes needed to advance the bill out of the Senate, even after Reid included the opt-out provision. Several other moderate Democrats expressed skepticism at the proposal as well, but most of the wavering Democratic senators did not go as far as Lieberman Tuesday, saying they were waiting to see the details.

Lieberman did say he's "strongly inclined" to vote to proceed to the debate, but that he’ll ultimately vote to block a floor vote on the bill if it isn’t changed first.

Lieberman’s justification on this is just nonsense – the public option would SAVE money for the government, to the tune of $100 billion dollars over 10 years according to the Congressional Budget Office. It also would cost nothing to the taxpayer, being financed by individual premiums.

Now, there’s the possibility that if the public option was set at Medicare +5, there might be cost shifting, if you ignored challenges to that claim, if you ignored the way insurance companies will game the system to push high cost people into the public option, and if you ignored the many other ways the insurance companies will be cost shifting themselves once this system is set up.

But everything else Lieberman said is horse puckey. He is either completely ignorant about health care works (unlikely, for a Senator from Connecticut). Or, he’s lying his ass off as to his rationale.